Constrain versions for Providers during docker build for 2.0.0

Since we are planning to cut 2.0.0-3 we should release the same set of Providers except for few exceptions:

apache-airflow-providers-elasticsearch==1.0.1 -- contains our logging fix
apache-airflow-providers-cncf-kubernetes==1.0.1 -- contains a bug fix for K8s Operator
apache-airflow-providers-microsoft-azure==1.1.0 -- Will allow installing snowflake provider (includes apache/airflow#12188)

Since this constraints are only used in docker build time and not included in Dockerfile users are free to upgrade to a major version for providers like google.

2.0.0/buster/Dockerfile

@@ -115,8 +115,16 @@ ARG AIRFLOW_VERSION="2.0.0"
 COPY include/pip.conf /etc/pip.conf
 COPY include/pip-constraints.txt /usr/local/share/astronomer-pip-constraints.txt
 
+# This constraints will be only used during docker-build
+# and won't be included in the final image
+# It is useful to install airflow-providers that work but still allow users to
+# install providers of their choice (as opposed to entries in astronomer-pip-constraints.txt)
+COPY build-time-pip-constraints.txt /tmp/build-time-pip-constraints.txt
+
 # Pip install airflow and astro security manager
-RUN pip install "${AIRFLOW_MODULE}" --constraint "https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-3.7.txt" \
+RUN pip install "${AIRFLOW_MODULE}" \
+    --constraint "https://raw.githubusercontent.com/apache/airflow/constraints-${AIRFLOW_VERSION}/constraints-3.7.txt" \
+    --constraint /tmp/build-time-pip-constraints.txt \
   && pip install "https://github.com/astronomer/astronomer-airflow-scripts/releases/download/v0.0.5/astronomer_airflow_scripts-0.0.5-py3-none-any.whl" \
 	&& pip install "astronomer-fab-security-manager~=1.5"
 

2.0.0/buster/build-time-pip-constraints.txt

@@ -0,0 +1,17 @@
+# Constraint the version pip will install during docker build
+
+apache-airflow-providers-amazon==1.0.0
+apache-airflow-providers-celery==1.0.0
+apache-airflow-providers-cncf-kubernetes==1.0.1
+apache-airflow-providers-elasticsearch==1.0.1
+apache-airflow-providers-ftp==1.0.0
+apache-airflow-providers-google==1.0.0
+apache-airflow-providers-http==1.0.0
+apache-airflow-providers-imap==1.0.0
+apache-airflow-providers-microsoft-azure==1.1.0
+apache-airflow-providers-mysql==1.0.0
+apache-airflow-providers-postgres==1.0.0
+apache-airflow-providers-redis==1.0.0
+apache-airflow-providers-slack==1.0.0
+apache-airflow-providers-sqlite==1.0.0
+apache-airflow-providers-ssh==1.0.0